High-efficiency bidirectional soft switching DC-DC converter

Author

Kim, Jun-Gu ; Park, Seung-Won ; Kim, Young-Ho ; Jung, Yong-Chae ; Won, Chung-Yuen

Author_Institution

Sch. of Inf. & Commun. Eng., Sungkyunkwan Univ., Suwon, South Korea

fYear

2010

fDate

21-24 June 2010

Firstpage

2905

Lastpage

2911

Abstract

In order to reduce size of bidirectional DC-DC converter, conventional topologies using hard switching method operate with high frequency. As switching frequency is getting higher, switching loss is increased. Conventionally an auxiliary circuit is implemented by using soft switching method in order to overcome this drawback,. The switch of the auxiliary circuit, however, is operated as hard switching. In this paper, high efficient bi-direction DC-DC converter is proposed. The suggested auxiliary circuit consists of one resonant inductor and two capacitors. Loss reduction is induced from both switches since the switches operate under ZVS turn-on and off condition. Main characteristic of the proposed topology is not only operated with soft switching method but has simple structure. The efficiency of proposed bidirectional soft switching DC-DC converter is verified by experimental results.

Keywords

DC-DC power convertors; zero voltage switching; ZVS; auxiliary circuit; bidirectional soft switching DC-DC converter; hard switching method; resonant inductor; Bidirectional control; Circuit topology; DC-DC power converters; Frequency conversion; RLC circuits; Switches; Switching circuits; Switching converters; Switching frequency; Switching loss; Bidirectional converter; distributed power system; electric vehicles; high-efficiency; non-isolated converter; resonant networks; soft switching; zero-voltage-switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference (IPEC), 2010 International

Conference_Location

Sapporo

Print_ISBN

978-1-4244-5394-8

Type

conf

DOI

10.1109/IPEC.2010.5543498

Filename

5543498